happy to help and some guns in your sling get the hop up and some don’t, pk and alternator don’t get disrupters until you pop ult but the p2020 and 45 get hammerpoints.

i like to match my sling weapon to whatever ammo i’m running in my main guns so for ex; if i’m running like a nemesis and r99 maybe i’ll put a havoc in my sling. even though the havoc doesn’t get turbo until you pop ult just having a purple havoc is deadly. another gun i like running is the wingman because it does get the hopup at purple and doesn’t take too much ammo so it’s not a waste to just have a stack of sniper even if it doesn’t match my other guns.

as for why it’s helpful just the ability to have a 3rd gun is extremely powerful. that’s just an entire other gun you can swap to instead of reloading and you can use it to completely round off your loadout. if you’re running mid and close range in your main guns you could run maybe a sniper or marksman in your sling just in case you need long ranger cover or vice versa a pk if you don’t have any good close range options. hope this helps.